Taxon - Links and literature
Kew Science - Plants of the World online 2024-05 [282316-2]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [as Penstemon pinorum L.M.Shultz & J.S.Shultz]
Data retrieved on: 1 February 2025
C. Ulloa et al. (2017): An integrated assessment of the vascular plant species of the Americas, Science. 358. 1614-1617 [as Penstemon pinorum L.M. Shultz & J.S. Shultz]Data retrieved on: 19 September 2019